Chemical tuning of electrical transport in Ti1−xPtxSe2−y

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dc.citation.firstpage45125en_US
dc.citation.journalTitlePhysical Review Ben_US
dc.citation.volumeNumber91en_US
dc.contributor.authorChen, Justin S.en_US
dc.contributor.authorWang, Jiakui K.en_US
dc.contributor.authorCarr, Scott V.en_US
dc.contributor.authorVogel, Sven C.en_US
dc.contributor.authorGourdon, Olivieren_US
dc.contributor.authorDai, Pengchengen_US
dc.contributor.authorMorosan, E.en_US
dc.date.accessioned2015-03-02T16:58:31Zen_US
dc.date.available2015-03-02T16:58:31Zen_US
dc.date.issued2015en_US
dc.description.abstractThe structural and transport properties of polycrystalline Ti1−xPtxSe2−y(x≤0.13,y≤0.2) are studied, revealing highly tunable electrical properties, spanning nearly ten orders of magnitude in scaled resistivity. Using x-ray and neutron diffraction, Pt is found to dope on the Ti site. In the absence of Pt doping (for x=0), Se deficiency (y>0) increases the metallic character of TiSe2, while a large increase of the low-temperature resistivity is favored by a lack of Se deficiency (y=0) and increasing amounts of doped Pt (x>0). The chemical tuning of the resistivity in Ti1−xPtxSe2−y with Se deficiency and Pt doping results in a metal-to-insulator transition. Simultaneous Pt doping and Se deficiency (x,y>0) confirms the competition between the two opposing trends in electrical transport, with the main outcome being the suppression of the charge density wave transition below 2 K for y=2x=0.18. Band structure calculations on a subset of Ti1−xPtxSe2−y compositions are in line with the experimental observations.en_US
dc.identifier.citationChen, Justin S., Wang, Jiakui K., Carr, Scott V., et al.. "Chemical tuning of electrical transport in Ti1−xPtxSe2−y." <i>Physical Review B,</i> 91, (2015) American Physical Society: 45125. http://dx.doi.org/10.1103/PhysRevB.91.045125.en_US
dc.identifier.doihttp://dx.doi.org/10.1103/PhysRevB.91.045125en_US
dc.identifier.urihttps://hdl.handle.net/1911/79052en_US
dc.language.isoengen_US
dc.publisherAmerican Physical Societyen_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.titleChemical tuning of electrical transport in Ti1−xPtxSe2−yen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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